Call Setup Priority

Call setup priority is a number between 1 and 4, used for controlling setup of conversations.

• 1 : Low priority: Call is always in private ringing mode, regardless settings of B station
• 2 : Normal priority
• 3 : High priority: Ignore private and Absence settings of B-station. Connect if B station is not busy
• 4 : Alarm priority: Also do Busy override of B. If B station is busy with lower priority calls/features, disconnect B and connect through. Also, if shortage of audio resources prevents call completion, disconnect lower priority call to allow this alarm call to be completed.

The same scale is used for other features, like groupcall. But these features the only significant value is 4=Alarm. The other values 1-3 are handled the same way.